/Engine/Source/Runtime/GeometryFramework/Public/UDynamicMesh.h
Realtime Update support. This is intended to be used in situations where the internal mesh is being modified directly, ie instead of viaEditMesh(), and we would like to notify listeners of these changes. GenerallyEditMesh()is preferred but in certain cases (eg like 3D sculpting) it is too complex to refactor all the mesh updates intoEditMesh()calls (eg some are done async/etc). So, code that does those kinds of modifications can callPostRealtimeUpdate()to let any interested parties know that the mesh is actively changing.
typedef TMulticastDelegate_OneParam< void, [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * > FOnMeshRealtimeUpdate